![](http://4.bp.blogspot.com/_5AO-vZRiTM4/TAk6O6jRuYI/AAAAAAAACqU/f6clwGmnVOw/s400/bra.jpg)
You may or may not be familiar with Worldmapper. It's a project that originated from the Social and Spatial Inequalities research group at the University of Sheffield, to create maps where geographic territories can be sized according to a whole assortment of other metrics, like population, literacy, income, etc. The resulting graphics are called cartograms and Worldmapper now offers almost 700 of them. Together they provide a fascinating visualization of global issues.
On a recent visit to the website, I discovered gridded cartograms. A uniform grid is imposed on a geographic territory and then each square is sized according to the value of a particular metric. This gridded mapping creates a way more nuanced representation than the traditional cartogram, which assigns a single value for each country. It also allows for analysis within one territory.
Here are some grid-mapped populations. A country like Italy, say, whose population is rather dense throughout, will look very much like its geographic shape, while Brazil (above), has quite a different story to tell.
![](http://4.bp.blogspot.com/_5AO-vZRiTM4/TAk3q2XBkrI/AAAAAAAACqM/MQbmwHYEmy0/s400/usa_main.jpg)
![](http://4.bp.blogspot.com/_5AO-vZRiTM4/TAk3qtd6x0I/AAAAAAAACqE/6jC_oboQUnU/s400/irq.jpg)
![](http://4.bp.blogspot.com/_5AO-vZRiTM4/TAlCBG_cgYI/AAAAAAAACqk/1Jj28Q6CoY4/s400/ita_smr_vat.jpg)
![](http://2.bp.blogspot.com/_5AO-vZRiTM4/TAk3qSK1AcI/AAAAAAAACp8/PVXt_VQPgdk/s400/arg.jpg)
![](http://3.bp.blogspot.com/_5AO-vZRiTM4/TAlCAjNBEpI/AAAAAAAACqc/iBE_Ieps2iw/s400/cod.jpg)
![](http://2.bp.blogspot.com/_5AO-vZRiTM4/TAk3p6I7-sI/AAAAAAAACps/qe9EVVy7zy8/s400/nga.jpg)
![](http://3.bp.blogspot.com/_5AO-vZRiTM4/TAlCBNv3GbI/AAAAAAAACqs/G5J403m-hWg/s400/mex.jpg)
![](http://3.bp.blogspot.com/_5AO-vZRiTM4/TAk2x_74d1I/AAAAAAAACpc/_KB7cRBOYuw/s400/chn_hgk.jpg)
![](http://4.bp.blogspot.com/_5AO-vZRiTM4/TAk2xgJ2HHI/AAAAAAAACpU/VUkK3YBiuKU/s400/rus.jpg)
![](http://1.bp.blogspot.com/_5AO-vZRiTM4/TAk2xVpgCDI/AAAAAAAACpM/hDkHnd-LGTg/s400/esp.jpg)
![](http://1.bp.blogspot.com/_5AO-vZRiTM4/TAk2xBwJauI/AAAAAAAACpE/HflG-Sy3hA8/s400/isr_psw.jpg)
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